Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing my new design; and,

FIG. 2 is a front view of another embodiment of a display screen or portion thereof with icon showing my new design.

The broken line showing a display screen or portion thereof forms no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 